Sniffing out decomposition: Investigating the reliability of human remains detection dogs

The purpose of this study was to investigate the reliability of trained Human Remains Detection (HRD) dogs in the field. HRD dogs are trained to locate deceased individuals, typically in conjunction with law enforcement agencies, by using their enhanced olfactory systems to detect scents that humans cannot. Limited research has been conducted on both the strengths and weaknesses of these dogs and their abilities to locate human remains. This study focused on one North Carolina based organization that trains HRD dogs. Data were collected by distributing surveys and by observing regularly scheduled training exercises conducted by the organization. The collected data were used to design an experiment. Specifically, dogs were tasked with locating human bone samples buried under four common North Carolina soil types from the following regions: Southern Piedmont, Southern Coastal Plain, Atlantic Coast Flatwoods, and Tidewater Area. It was predicted that identifications of bone by the canines within the various soils would become faster over the course of experimentation, which could indicate an ability to learn and apply new skills quickly. Meaning, that even though a canine may not have been exposed to a specific soil type through training, their enhanced olfactory abilities and adaptability to new environments would make them well prepared to perform in multiple locations, thus increasing their overall reliability. Results indicated that canines responded quicker and more reliably to the soil most local to their training region. Future recommendations would be to continue this research to see if other HRD teams report similar results

The Spanish Civil War as Reported in the New York \u3cem\u3eHerald Tribune\u3c/em\u3e from Aug. 1, 1936 to July 31, 1937

Each issue of the New York Herald Tribune, from Aug. 1, 1936 to Aug. 1, 1937, was consulted. The length and position of each war story was noted, together with display in the headline or pictures accompanying the article. Attention was paid to the dateline, the source and authority, and the channels through which the story was sent -- since news fr om a strictly censored bureau is not usually as reliable as that from open cities

Sustainability in higher education for the global south a conversation across geographies and disciplines

A workshop on ‘Sustainability in Higher Education from the vantage of the Global South’ was organized by the Azim Premji University between 12 and 14 January 2015 in Bengaluru, India. Its goal was to explore how sustainability can be integrated into undergraduate, postgraduate and professional courses. The workshop was divided into four sessions with interlinked themes – the first, with a focus on framing sustainability; the second, on integrating sustainability in higher education; the third, on sustainability curricula; and the last, on pedagogy for sustainability. All four sessions were informed by the broader educational goal of enabling students from diverse backgrounds to envision, conceptualise, research and implement sustainability in varied personal and professional contexts. Participants of the workshop drew upon their varied experiences, from India and institutions across the world, in the teaching and learning of the multidimensional concept of sustainability in diverse geographies. The questions, counterquestions, discussions and potential solutions raised during the workshop are presented in this paper in a dialogic styl

Towards 'Pt-free' Anion-Exchange Membrane Fuel Cells: Fe-Sn Carbon Nitride-Graphene 'Core-Shell' Electrocatalysts for the Oxygen Reduction Reaction

We report on the development of two new Pt-free electrocatalysts (ECs) for the oxygen reduction reaction (ORR) based on graphene nanoplatelets (GNPs). We designed the ECs with a core-shell morphology, where a GNP core support is covered by a carbon nitride (CN) shell. The proposed ECs present ORR active sites that are not associated to nanoparticles of metal/alloy/oxide, but are instead based on Fe and Sn sub-nanometric clusters bound in coordination nests formed by carbon and nitrogen ligands of the CN shell. The performance and reaction mechanism of the ECs in the ORR are evaluated in an alkaline medium by cyclic voltammetry with the thin-film rotating ring-disk approach and confirmed by measurements on gas-diffusion electrodes. The proposed GNP-supported ECs present an ORR overpotential of only ca. 70 mV higher with respect to a conventional Pt/C reference EC including a XC-72R carbon black support. These results make the reported ECs very promising for application in anion-exchange membrane fuel cells. Moreover, our methodology provides an example of a general synthesis protocol for the development of new Pt-free ECs for the ORR having ample room for further performance improvement beyond the state of the art

SARS-CoV-2 NSP14 governs mutational instability and assists in making new SARS-CoV-2 variants

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the rapidly evolving RNA virus behind the COVID-19 pandemic, has spawned numerous variants since its 2019 emergence. The multifunctional Nonstructural protein 14 (NSP14) enzyme, possessing exonuclease and messenger RNA (mRNA) capping capabilities, serves as a key player. Notably, single and co-occurring mutations within NSP14 significantly influence replication fidelity and drive variant diversification. This study comprehensively examines 120 co-mutations, 68 unique mutations, and 160 conserved residues across NSP14 homologs, shedding light on their implications for phylogenetic patterns, pathogenicity, and residue interactions. Quantitative physicochemical analysis categorizes 3953 NSP14 variants into three clusters, revealing genetic diversity. This research underscoresthe dynamic nature of SARS-CoV-2 evolution, primarily governed by NSP14 mutations. Understanding these genetic dynamics provides valuable insights for therapeutic and vaccine development.Ciencias Experimentale

mSpray: A mobile phone technology to improve malaria control efforts and monitor human exposure to malaria control pesticides in Limpopo, South Africa

Recent estimates indicate that malaria has led to over half a million deaths worldwide, mostly to African children. Indoor residual spraying (IRS) of insecticides is one of the primary vector control interventions. However, current reporting systems do not obtain precise location of IRS events in relation to malaria cases, which poses challenges for effective and efficient malaria control. This information is also critical to avoid unnecessary human exposure to IRS insecticides. We developed and piloted a mobile-based application (mSpray) to collect comprehensive information on IRS spray events. We assessed the utility, acceptability and feasibility of using mSpray to gather improved homestead- and chemical-level IRS coverage data. We installed mSpray on 10 cell phones with data bundles, and pilot tested it with 13 users in Limpopo, South Africa. Users completed basic information (number of rooms/shelters sprayed; chemical used, etc.) on spray events. Upon submission, this information as well as geographic positioning system coordinates and time/date stamp were uploaded to a Google Drive Spreadsheet to be viewed in real time. We administered questionnaires, conducted focus groups, and interviewed key informants to evaluate the utility of the app. The low-cost, cell phone-based “mSpray” app was learned quickly by users, well accepted and preferred to the current paper-based method. We recorded 2865 entries (99.1% had a GPS accuracy of 20 m or less) and identified areas of improvement including increased battery life. We also identified a number of logistic and user problems (e.g., cost of cell phones and cellular bundles, battery life, obtaining accurate GPS measures, user errors, etc.) that would need to be overcome before full deployment. Use of cell phone technology could increase the efficiency of IRS malaria control efforts by mapping spray events in relation to malaria cases, resulting in more judicious use of chemicals that are potentially harmful to humans and the environment.This publication was supported by grant numbers: R01 ES020360 and R01 ES020360-S1 from the National Institute of Environmental Health Sciences (NIEHS). We would also like to thank Zinto Corporation, South Africa for donating Smartphones

mSpray : a mobile phone technology to improve malaria control efforts and monitor human exposure to malaria control pesticides in Limpopo, South Africa

Recent estimates indicate thatmalaria has led to over half amillion deathsworldwide,mostly to African children. Indoor residual spraying (IRS) of insecticides is one of the primary vector control interventions. However, current reporting systems do not obtain precise location of IRS events in relation tomalaria cases,which poses challenges for effective and efficient malaria control. This information is also critical to avoid unnecessary human exposure to IRS insecticides. We developed and piloted a mobile-based application (mSpray) to collect comprehensive information on IRS spray events. We assessed the utility, acceptability and feasibility of using mSpray to gather improved homestead- and chemical-level IRS coverage data. We installed mSpray on 10 cell phones with data bundles, and pilot tested it with 13 users in Limpopo, South Africa. Users completed basic information (number of rooms/shelters sprayed; chemical used, etc.) on spray events. Upon submission, this information as well as geographic positioning system coordinates and time/date stamp were uploaded to a Google Drive Spreadsheet to be viewed in real time. We administered questionnaires, conducted focus groups, and interviewed key informants to evaluate the utility of the app. The low-cost, cell phone-based “mSpray” app was learned quickly by users, well accepted and preferred to the current paper-based method. We recorded 2865 entries (99.1% had a GPS accuracy of 20 m or less) and identified areas of improvement including increased battery life. We also identified a number of logistic and user problems (e.g., cost of cell phones and cellular bundles, battery life, obtaining accurate GPS measures, user errors, etc.) that would need to be overcome before full deployment. Use of cell phone technology could increase the efficiency of IRSmalaria control efforts by mapping spray events in relation to malaria cases, resulting in more judicious use of chemicals that are potentially harmful to humans and the environment.This publication was supported by grant numbers: R01 ES020360 and R01 ES020360-S1 from the National Institute of Environmental Health Sciences (NIEHS)http://www.elsevier.com/ locate/envinthb201

Sustainability in higher education for the global south: A conversation across geographies and disciplines

A workshop on ‘Sustainability in Higher Education from the vantage of the Global South’ was organized by the Azim Premji University between 12 and 14 January 2015 in Bengaluru, India. Its goal was to explore how sustainability can be integrated into undergraduate, postgraduate and professional courses. The workshop was divided into four sessions with interlinked themes – the first, with a focus on framing sustainability; the second, on integrating sustainability in higher education; the third, on sustainability curricula; and the last, on pedagogy for sustainability. All four sessions were informed by the broader educational goal of enabling students from diverse backgrounds to envision, conceptualise, research and implement sustainability in varied personal and professional contexts. Participants of the workshop drew upon their varied experiences, from India and institutions across the world, in the teaching and learning of the multidimensional concept of sustainability in diverse geographies. The questions, counterquestions, discussions and potential solutions raised during the workshop are presented in this paper in a dialogic style